Y=x^2+10x+11
y=x^2+x-7
therefore,
x^2+10x+11=x^2+x-7
x^+10x+11-x^2-x+7=0
9x+18=0
x=-2
y=(-2)^2+10(-2)+11= -5
Do you know how many friends he has then you can answer the question
Answer:
Answer to 9 is B answer to 10 is C
Step-by-step explanation:
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